iOffline/iPublishCentral Reader can't be opened because it is from an unidentified developer

iOffline/iPublishCentral Reader can’t be opened because it is from an unidentified developer.

This new security feature is called GateKeeper, and it doesn’t mean you can’t run those unverified apps on the Mac, you just have to either temporarily skirt the security blanket of GateKeeper, or turn off the app limitations entirely.

Temporarily Get Around “App Can’t Be Opened” Alert Message

This is probably the best option for most users, since it maintains some security:

Right-click (or control-click) the application in question and choose “Open”

Click the “Open” button at the next dialog warning to launch the app anyway

You can do this with any third party app that gives you this warning dialog and open it anyway.

App can’t be opened because it is from an unidentified developer” Error in OS X Mountain Lion

Disable GateKeeper’s Unidentified App Developer Prevention Completely

This is generally best for advanced users who know what apps to trust and not to trust:

Launch System Preferences from the Apple  menu

Choose “Security & Privacy” and then click the “General” tab, followed by clicking the lock icon in the corner to unlock the settings